Sole and heel trimmer



(No Model.) 3 Sheets-Sheet 1.

G. H. TRASK.

SOLE AND HEEL TRIMMER. N0. 407,263. Patented July. 16, 1889.

IN, Perms, mm nmo wm. Washington, n.c.

(No Model.) '3 Sheets- Sheet 2.v

O. H. TRASK.

SOLE AND HEEL TRIMMER.

, N0.407,263. Patented July 16, 1889L (No Model.) SSheets-Shet a.

C. H. TRASK. SOLE AND HEEL TRIMMER.

N0. 407.Z63. Patented July 16 1889.

UNITED STATES PATENT OFFICE.

I CHARLES H. TRASK, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE DUPLEX SHOE TRIMMER COMPANY, OF PORTLAND, MAINE.

SOLE AND HEEL TRIMMER.

SPECIFICATION, forming part of Letters Patent No. 407,263, dated July 16, 1889.

Application filed June 8, 1887. Serial No. 240,598. (No model.) i

To all whom it mag concern} Be it known that I, OHARLEs I-l. TRASK, of Lynn, in the county of Essex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Rotary Cutters for Heel-Trimming Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in-explaining its nature.

The invention relates to a rotary trimmingmachine similar to that described in my Patent No. 357 ,7 88, and comprises various details of organization which are hereinafter fully specified.

Inthe drawings, Figure 1 represents a duplex heel-trimming machine provided with trimmers having reversible'shell blades or knives. Fig. 2 is a view in end elevation thereof. Fig. 3 is a view in elevation of the front, to the left of the end represented in Fig. 2. Fig. 4. is a vertical section of the trimmer, taken upon the line or a; of Fig. 5. Fig. 5 is a View in end elevation of the trimmer. Fig. 6 is a sectionupon the line y y of Fig. 4.

Referring to the drawings, A represents the head of the machine. a represents a shaft having suitable hearings in the head, and arranged to extend from the front a to provide.

a support for the right trimmer B, and from the opposite front a to provide a support for the left trimmer B. The shaft a also has a pulley a, over which the operating-belt (0 passes. Each trimmerhas a rand-guide O and a top-lift rest and guide 0, which are adapted to be moved laterally in relation to the trimmer, and are controlled in their relation to the surface of the trimmer by an adjustable screw C. These parts, together with the heelrest D, are carried by the support (I. These parts and their operation are fully described in my Patents Nos. 357,742 and 357,738, and need not be further described here. Each of the trimmers comprises a block E, having the shaft-hole e and the studs or posts e, extending from the shoulders e 6 These studs receive and hold the shell blades or knives 6 each shell-blade having a hole c of a size to fit the stud or post, and the shoulders 6 e which are adapted to come in contact with the shoulders e e of the holdingblock E. Each blade or knife is locked to the post by the screws 6 each of which screws into a screw-hole formed in the stud or post, and the head of which enters into a countersink in the end of the post and in the blade or knife, a portion of the head thereby overlapping or extending upon the outer surface of the blade or knife about the post or stud. (See Figs. 4 and 5.)

Each blade or knife c has the cutting-edges 6 a, (see Fig. 4,) and the blade is of any desired curvature or shape, and is of any desired length suitable for a single trimmer as distinguished from a duplex trimmer, as described and claimed in my application filed February 12, 1887, Serial No. 227,355.

The trimmer is adapted to be used in a duplexmachine or a machine adapted to'use the duplex trimmer by making the blades or knives reversible upon the block E and providin g each blade with two cutting-edges, and also by so attaching them to their holding block or support that each edge will be brought 7 5 into proper position for cutting. For instance, when the trimmer is used as a right trimmer, the blades or knives project from one side of the holding-blocks, as represented in Fig. 5. This brings the cutting-edges e into proper or operative position.

\Vhen the trimmer is used as a left trimmer, the blades are turned upon their studs, so as to project from the holding-block in a direction opposite from that in which they extend when serving as a right cutter, and this will bring the cutting-edges a into opera tive position.

In order that the cutting-edges of the knives or blades may bear the relation to the center of the trimmer ordinarily obtained by backing off the outer surface of the blades or knives, I have made the shoulders c of each holding stud or post 6 nearer the center of the trimmer than the shoulder a, and have made the post very slightly inclined from a radius drawn from the center of the block E. This has the effect of bringing each edge of the knife or blade when in a trimming position a little farther removed from the center roo of the trimmers than the other or inoperative edge, and each blade or knife is substantially backed off from this cutting position of its edge to the other or inoperative edge of the blade because of this slightly-eccentric position which the blade occupies. Of course this cutting position remains substantially constant, being varied only by the reduction of the length of the blades from sharpening, and is in one case-that is, when the trimmer is used as a right trimmer-upon one side of the block E and when used as a left trimmer upon the other side, and is in the first place occupied by the cutting-edge e and in the second case by the cutting-edge 6". These blades may be made either in dies or by dropforging, or they may be made as steel castings, or in any other desired way, and they may be formed or provided with the randtrimmer f, formed integral with the blades.

In Figs. 5 and (5 I have represented each blade as having an extension or projection f at its outer edge to form the rand-cutters f at each end.

In use, when used as a right trimmer, the trimmer is mounted upon the right end of the shaft a, as represented in Fig. 1, B being the right trimmer. To use the same trimmer as a left trimmer, or upon the left end of the shaft (1, the blades or knives c are turned upon their supports, so as to extend from the other side of their holding-block C to the position represented in Fig. l, and the trimmer then becomes a left trimmer B.

In my patent, No. 357,743, dated February 15, 1887, I have shown and described an organization embracing a rotary shaft having at one end a duplex hcel-trimmer and at the other end of the shaft a duplex heel-trinnner. Each of these trimmers has a right cuttingsection and a left cutting-section-that is, the trimmers are interchangeable upon the ends of the shaft. In my present invention I have shown an organization which embraces the use of a rotary shaft and a single right trim mer at the right end of the shaft and a single left trimmer at the left end of the shaft, and these trimmers are not interchangeable and have but one trimming-section, the single right heel-trimmer being adapted for use only at the right end of the shaft and the single left heel-trimmer being operative only uponthe end of the shaft; and I therefore consider that the orgzinization described in my said patent does not fully embrace or cover the organization herein specified.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. A rotary trimmer or cutter for a heeltrimming machine, having a blade or knife support and reversible shell blades or knives carried thereby, which are provided with two cutting-edges, each of which is adapted to be used in turn either for right cutting or for left cutting, substantially as described.

2. The combination of a block or support E for a rotary sole-edge trimmer or cutter with the shell blades or knives a, shaped substantially as specified, each. of which has a cutting-edge dand a cutting-edge 6 attached to the said block or support in a manner, substantially as described, to permit them to be swung or moved thereon to bring each cuttin g-edge of the said knives or blades into op erative position either for right or left trimming, substantially as described.

3. The combination of the block E, having the posts or studs 6' and the shaft-hole e, the blades (2 having the cutting-edges e e and the locking screws 6 substantially as described.

4. The combination of the block E, having the shaft-hole e, the posts 6', and the shoulders c a the posts and shoulders being arranged in relation to the center of the block as specified, with the shell blades or knives 6 having the cutting-edges 6" c and the fastening-screws a, substantially as described.

5. A rotary trimmer for a sole or heel edge trimming machine, having reversible blades provided with two eutting-edges eccentrically secured to a holding-block,whereby the blades when occupying one position thereon present one trimn'iing-edge, while the other trim min gedge is within the circle described by the operative trimming edge, whereby upon the turning of the blades upon their supports the inoperative cutting-edge is brought into operative position and the first-named cuttingedge moved to a position within the circle which it formerly described, as and for the purposes specified.

6. A rotary trimmer for a heel and sole edge trimming machine, having a block E and a series of reversible blades c" secured thereto,

one or more of which has the rand-trimmer integral with it or them, substantially as described.

7. The shell blade or knife 0 having the hole 6', the shoulders 6 c and the cuttingedges e e substantially as described.

8. A shell blade or knife having the hole c,

the shoulders d a and cutting-edges e" e", the

extension f upon one edge having the cuttingedges f, as and for the purposes described.

5). The combinatiomin aheel-trimming machine, of a shaft a, a right trimmer B, comprising a block or support E, and the reversible blades 6*, arranged to extend outwardly therefrom and supported at one end of the shaft 0., the left trimmer 15, comprising the block E and reversible blades 6", which extend outwardly f rom'it, and is supported upon the opposite end of the shaft (1, a rand-guide C, top-lift rest and guide 0, and a heel-rest D foreaeh cutter, as and for the purposes described.

CHARLES II. TRASK. In presence of F. l. RAYMOND, 2d, J. M. DOLAN.

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